Great Britain basketball captain Drew Sullivan is one of the team of London 2012 hopefuls writing for Metro during their build-up to the Olympic Games. Here he explains why he won't be taking his place at the Games this summer for granted.

Young Brazilian Roberto Custodio sought to overcome his father’s murder on the streets of Rio de Janeiro by dedicating his life to boxing. Helped by the Laureus-supported Fight for Peace project, he has put his tragic childhood behind him and is aiming for the Olympics.